Steve has been self-employed since age 24. He began his career in his father’s Purina feed store in Tennessee.

Regina was a traveling product training manager for Ralston-Purina in the 1980s. That’s how the two met.

When 25 percent of Steve’s father’s 10,000-square-feet store had expanded to bird items, he discovered, “I think I like this best,” he said.

Their specialty is cavity nesters — no wonder they were charter members of the Missouri Bluebird Society.

But they also rely on professional organizations and experts to keep up with trends and the latest information.

Last year, the Garrs watched more than 100 babies fledge from the martin houses and bluebird boxes they tend.

When in Tennessee, the Garrs kept more than 100 bluebird boxes.

“We enjoy it and could definitely spend all of our time looking in nest boxes,” Regina said.

But they’ve both enjoyed the aspect of educating others, too. In addition to their store hours, they publish a website and e-mail newsletter, plus regularly updated brochures specific to local species and backyard bird issues.

Most people are attracted to conservation through their own backyards, Regina said.

“We just like that avenue of sharing information,” she said. “We like to see people learn the correct information.”

As they research and prepare for workshops, like this weekend’s “Advanced bluebirding and Purple Martins,” the Garrs enjoy learning, too — even from those who will attend their seminars.

“Birds don’t know state lines,” Steve said.

Their store’s wall is lined with photos from customers and Steve of backyard visitors, like an albino bluejay or a dozen bluebirds or a hummingbird feeding from a boy’s hands.

But they also get a thrill from the occasional “outsider” who visits, like the brown pelican at Binder Park, the road runner, the painted bunting which nested at Steak ‘n Shake, the western kingbirds which nested at Walmart or the scissor-tailed fly catchers at Walgreens.

“It fun when people are seeing birds here which they didn’t get on a plane to go see,” Regina said.

When someone reports an unusual or a first siting to the Garrs, they then share it with their other customers, “so people know what to be looking for,” Steve said.

For example, the common red poll visits during the winter but can get lost among the pine siskins, he said.